Blender hangs at command window
After starting up Linux I wanted there to mount the windows partitions. NTFS filesystem couldnt be mounted though since Windows was not shut down properly (which is not true). I cleaned the state and mounted them, worked with blender, then restated into windows. Blender then worked again. Not sure now if that was coincidence or if this was the result of sth else I did... but perhaps it's worth a try if someone runs into this problem.